Double window construction



Nov. 14, 15939.

R. B. NELSON i DOUBLE WINDOW CONSTRUCTION Filed4 June 7, 1938 IIJVEIQTQR.l` A

ATTORNEYS.

Patented Nov. 14, 1939 stars man' PATENT rios 2,179,668 DOUBLE WINDOW CONSTRUCTION Application June 7, 1938 Serial No. 212,315

3 Claims.

This invention relates to double window constructions, such as are used in railway cars, buses, and other structures, and particularly window units for air conditioned rooms or interiors, in

which units a moisture-absorbing material is' used to prevent clouding of the glass panels, by absorbing moisture from the air trapped between the glass panels; and has for its object a Window sash construction in which a chamber for a 'moisture-absorbing material is a` unitary structure with the sash and is of such capacity as to carry a relatively large quantity of moistureabsorbing material without increasing the widthwise dimension of the sash or the area of the sash, and occupies a space that is always available in the car body structure and used for no Figure 2 is a fragmentaryedge view ofk one of' the upright members of the sash showing the chamber for the moisture-absorbing material applied thereto. .Y l

Figure 3 is an enlarged sectional view von line 3 3, Figure 1.

l designates the body of the sash, and 2 the spaced apart glass panels, the body being formed with inwardly facing channels V3 in which are located glazing strips 4. The body is also formed with an intermediate channel opening into the space between the panels 2 and in which is seated the base ange 5 of a spacer 6 extending between the margins of the glass panels. The spacer also has laterally extending flanges 1 extending across the edges of the glass panels.

The glazing strips 4 and the spacer 6 together with the flanges 1 provide channels in the sash for receiving the margins of the glasspanels 2. The glazing strips and spacer are of resilient compressible material, as rubber, and the glazing strips include base portions fitting4 the channels 3 and headed portions, which press against the margins of the glass pane, these headed portions being provided with lips 8 which press against the margins of the glass panels. The headed portions are under compression to press the lips against the panels. The spacers are also formed with lips 9, which are likewise under compression, to press against the inner margins rof the glass panels in opposition to the lips 8. These parts 'I and 9 are spaced apart from the margins of the glass panels, except along the lines engaged by the lips 3 and 9, and they have a give-and-take or follow-up action for maintaining the seal between them and the panels by compensating for the unequal pressures of the outside air and the atmosphere between the panels 2, as the outside pressure varies with altitude and with low and high barometer readings. The compensating action prevents the outside air from seeping into the space between the glass panels when the outside pressure is higher than the pressure between the glass panels and also prevents the leaking out ofthe dry or conditioned air from between the glass panels, when the outside air pressure is lower than the pressure between the panels Y2.

The body of the sash I is formed with an exterior channel around its edge. One of the side walls IIl of this channel is of greater width than the other side wall II and the side wall Id laps the sheathing I2 of the car body and is secured thereto. The side walls or anges are face plates for the sash when the sash is mounted in the window opening.

The inside trim around the window covers the joint between the ange II and the inner wall or facing of the car body. The trim along the upright or stiles, of the sash is usually a sheet metal window stop formed with a curtain guide,

l and this stop is removable.. It also covers the closures I8 and I9 in order to remove any temptation of 'persons to meddle with them.. As this trim is well known, it is thought that illustration thereof is unnecessary.

By this invention, the space at the edge of the sash is utilized for a moisture-absorbing chambenof such proportion as to hold a large quantity of moisture-absorbing material, as activated alumina, suiiicient to remain activeover a long period of time. I3 designates the chamber, this being preferably located along either or both upright members of the sash, so that the chamber is elongated in a vertical direction. The sideA walls III and II and the bottom of the channel in the edge of the sash form three of the walls of the chamber, and the other wall is formed by a partition I4 extending between the side walls I0 and Il and joined thereto, .as by cement at 55 r tion are inset inwardly at I6 to form the top and .plug I9. the chamber I3 through the sash and the spacer,

bottom walls of the chamber. They are secured to the bottom of the channel at the edge of the sash, as by screws I'I. -The chamber I3 is provided with a loading opening near its upper end and an unloading opening near its lower end, these openings having suitable closures, as plugs I8 and I 9,y and the lower end of the partition I4 is formed inclined at 20 to provide a chute toward the unloading opening normally closed by the Suitable ducts or tubes 2 I lead from and communicate with the space between the panels 2.

'Ihe moisture-absorbing material, as activated alumina', preferably in small pellets or in granulated form, is lled in through the loading opening normally closed by the plug I8, and when the material becomes inactive, it can be removed by removing the closure I9 for the unloading opening. Thus, by reason of the location .of the chamber I3 relatively to the sash, it occupies what has heretofore been a dead space, and hence can be applied to the sash without increasing the dimension of the sash in any direction, and also can be of such proportions that enough material can be placed therein to last indenitely. Furthermore, after the moisture has been first absorbed from the air in the space between the panels 2, the dry condition of the air is maintained, due to the relatively large capacityA of the chamber I3 and its location, and also due to the compensating action of the glazing strips 4 and the spacer 6.

What I claim is:

1. A double window construction comprising a sash, glass panels mounted in the sash in spaced relation with an air space between them, and a chamber for a moisture-absorbing agent carried by the sash at the edge of one of the upwardly extending edges of the sash and communicating with the space between the panels, the chamber having a loading and an unloading opening adjacent its upper and lower ends respectively, said openings extending through one of the faces of the sash and closures for said openings.

2. A double window construction comprising a sash, glass panels mounted in the sash in spaced relation with an air space between them, the sash being formed with a channel in the edge thereof facing outwardly in an edgewise direction, the side walls of the channel forming face plates for the sash when 4.mounted in a window opening, a partition between said side walls of an upwardly extending portion of the channel and spaced from the bottom of the channel, forming a chamber for a moisture-absorbing agent, loading and unloading openings extending through one of said face plates and located near upper and lower ends of the channel, said chamber communicating through ducts in the sash with the space between the panels.

3. A double window construction comprising a sash, glass panels mounted in the sash in spaced apart relation with'an air space between them, the sash having means for sealing the joint between the panels and the sash and providing a. spacer between the panels, the sash being formed with an external channel along an upright edge thereof, facing outwardly in an edgewise direc-4 tion, the side walls of the channel forming inner and outer facing plates for the sash, a partition extending lengthwise of said side walls between the same and spaced from the bottom of the channel, said partition having top and bottom walls secured to the bottom of the channel, the partition, top and bottom walls and channel forming a chamber for receiving a moistureabsorbing material, passages leading from the chamber through the bottom of said channel and through the spacer to the space between the glass panels, one of said face plates having a loading opening into the chamber near the upper end thereof and an unloading opening into the chamber at the lower end thereof, and closures for said openings.

RUSSELL B. NELSON. 

